Op vrijdag 20 oktober 2023 om 18:01:57 UTC+2 schreef JTEM is so reasonable:
[email protected] wrote:
- australopiths are fossil relatives of Gorilla or Pan or..., not of Homo
Oh, I agree that they're not an ancestor of Homo but, I wouldn't draw
any definitive lines between relationships.
Yes, we can't be sure unless we have DNA, and there can always have been other unknown extinct hominid side-branches (hominid today = HPG), but the PA descriptions are clear: E.Afr.apiths typically resemble Gorilla>HP, and S.Afr.apiths typically resemble
H or G (refs in my 1994 & 1996 Hum.Evol.papers).
And the correlation with tectonics is also clear: Pliocene"gracile"->early-Pleist."robust" in E//S.Africa cf. Rift formation: afarensis->boisei // africanus->robustus.
We also know: Pliocene Homo was NOT in Africa (*at least* since 3.7 Ma): Yohn CT cs 2005 PLoS Biol.3:1-11.
Early Homo fossils are abundant in E.Asia: Java, Flores, Peking, Luzon...
With the available infm, it's clear IMO:
- late-Miocene hominids were aquarboreal in the incipient Red Sea,
- Gorilla-Praeanthr. 8-7 Ma followed the incipient E.Afr.rift->afarensis->boisei etc.,
- 6-5 Ma (exactly 5.33? mega-flood) the Red Sea opened into the Gulf/Aden:
- Pan went right->E.Afr.mangroves (no fossils)->incipient S.Afr.rift after c 4 Ma Australop.s.s.africanus->robustus,
- Pliocene Homo went left->S.Asian mangroves->early-Pleist.Java H.erectus=brain++, pachyosteoscl. etc.etc.=shallow-diving = "aq.ape"s.s.
There's 0 doubt:
H.erectus often dived for shellfish:
• tooth-wear caused by "sand & oral processing of marine mollusks", Towle cs 2022
https://onlinelibrary.wiley.com/doi/10.1002/ajpa.24500
• coastal fossilisation: Mojokerto barnacles + corals, Trinil: edible shellfish Pseudodon + Elongaria, Sangiran-17 "brackish marsh near the coast".
• Stephen Munro discovered sea-shell engravings made by H.erectus, Joordens cs 2015 Nature 518:228–231
https://pubmed.ncbi.nlm.nih.gov/25470048/
• ear-exostoses (H.erectus & neand.) develop after years of cold(er) water irrigation
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5696936/
• pachy-osteo-sclerosis: only in slow+shallow-diving tetrapods (de Buffrénil cs 2010 J.Mamm.Evol.17:101-120), e.g. erectus’ parietal = 2x as thick as in gorillas.
• erectus' brain size (2x apes/australopiths) is facilitated by aquatic foods, e.g. DHA docosahexaenoic acid in shellfish… cf. Odontocetes, Pinnipedia.
• Pleistocene colonisations of Flores & Luzon 67
https://www.academia.edu/36193382/Coastal_Dispersal_of_Pleistocene_Homo_2018
• Homo’s stone tool use & dexterity is typical for molluscivores, e.g. sea-otters.
Only *incredible* imbeciles still believe their ancestors ran after African antelopes... :-DDD
I mean, they descend from the Aquatic Ape ancestor, or one of them.
What is "aq.ape"? We have to discern:
1) Mio-Pliocene *aquarboreal* Hominoidea (apes in // ->less aquarboreal cf.Pleist.cooling?),
2) shallow-diving H.erectus (since early-Pleist.? already Pliocene??) = "aq.ape s.s."
IOW, non-Homo Hominoidea ("apes") were aquarboreal, but no shellfish-divers like H.erectus.
I imagine they were a sub species, or close enough.
Groups from the parent Aquatic Ape population routinely broke off,
pushed inland. They were descendants of those groups.
...later groups to push inland would interbreed with earlier
groups, moderating their evolution...
AFAWK, archaic Homo's shellfish-diving was?began early-Pleist. SE.Asia (why?? different shellfish Ice Ages??).
Meanwhile, Pan-Australop.//Gorilla-Praeanthropus evolved in // in Africa -> knuckle-walking apes today, indendently from us
(Homo (sapiens?) only re-entered Africa late-Pleist.?).
The further you got from the Horn of Africa, the lesser the influx of
new, moderating DNA from interbreeding...
The clean break came maybe 3.7 million years ago, aligning with
the retrovirus evidence. If there was any ancestor species to Homo
in Africa at that time, they were absorbed by the Pan side, or went
extinct, or were genetically swamped by later contact with the
Eurasian population.
3.7 Ma is not impossible, but more likely when Homo & Pan split
(the Red Sea opened into the Gulf 6-5 Ma, possibly exactly 5.33 Ma Zanclean mega-flood):
-Pan went right,
-Homo went left:
simple, no?
:-)
All this has already been published in my book,
google "Verhaegen Bonne English"
https://www.gondwanatalks.com/l/the-waterside-hypothesis-wading-led-to-upright-walking-in-early-humans/
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